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Can i bridge the 4 ch. amp to 2 chnl. - Car Audio & Video

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Hello bdawson,

Maybe. Some, but not all, 4-channel amps can be bridged. You'll need to provide a specific brand and model number for a more definitive response.

On many bridgeable amps, the connections are shown right on the output terminals, usually the "+" of one channel and the "-" on another channel. The connection diagram in your user manual may also show which channels are bridgeable and the appropriate connections. Some amps may support what they call "tri-mode", powering both full-range speakers and subs at the same time.

Using a multi-channel amp with the channels bridged to power subs is a compromise. While you'll get an increase in power, it usually isn't as much as you would get from a monoblock. And fine tuning for the best sound is more complicated, balancing the filters and crossover so that the correct frequencies are sent to the appropriate speaker.

Hope this helps.

Posted on Jun 16, 2009

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1 Answer

Whats the best way to hook up one jlw3v4 12 with dualxpa4640 amp?


if you have 1 sub u need a mono amp, two subs you can use a stereo amp on "two channel" mode if its NOT bridged, 4 chanel is more for 6x9s
this guide should help you alot :)

http://www.crutchfield.com/S-vGdyKqs7MMf/learn/learningcenter/car/subwoofers_wiring.html

Oct 03, 2012 | Jl Audio 12W3 Car Subwoofer

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ON MY Pioneer PRS-X720 Car Audio Amplifier WHEN I TRY TO HOOK UP THE BRIDGE LITTLE SOUNDS COMES OUT THE SPEAKERS I HAVE TWO 12S MTX THUNDER IN THEY ARE IN A 2OHMS BOX BUT WHEN I HOOK UP JUST ONE CHANNEL...


From the specs this amp can only handle 4ohms when bridged but can handle 2ohms when it's not bridged

Specifications
  • Continuous Power (20Hz-20kHz, 0.04% THD)
    • 2 ch: (4 Ohm) 100Wx2
    • 2 ch: (2 Ohm) 200Wx2
    • 1 ch: (4 Ohm) 400Wx1
  • Maximum Power (EIAJ)
    • 2 ch: (4 Ohm) 250Wx2
    • 1 ch: (4 Ohm) 750Wx1
  • Frequency Response: 10Hz - 50kHz (0,-1dB)
  • Total Harmonic Distortion: <0.01% (1kHz, 4 Ohm)
  • Signal-to-Noise Ratio: >105dB (IHF-A Weighted, at 1kHz)
  • Dimensions: 10-3/8" x 2-1/2" x 13-5/8"
Hope that helps.

Nov 08, 2010 | Pioneer PRS-X720 Car Audio Amplifier

1 Answer

How can i bridge a mtx 9500 using a mono amp?


You cant bridge it to the MONO AMP . You can only bridge subs & speakers to 2 CH & 4 CH AMPS that are bridgeable. Because if it appears that there is 2 channels on a Mono amp its so its convenient for you to hook up 2 4ohm subs to it easily But both channels are actually connect internally together in parallel inside the amp unlike a 2 channel they are separate.

So just connect your mtx 9500 to a plus and a minus and doesnt matter which since all the + terminals of are connected together and - are connected together already.

Whats important is on the side of the sub/box it reads 2 ohms. The lower the ohms the more power the Mono amp will put out. Mono amps are designed to handle 2ohm loads.

If it reads 4ohms The MONO amp is the wrong amp to use cause the power will be weaker. So if you have a 1000 Watt Mono amp at 4ohms the sub will only get 500 WATTS Max while a 2 ohm will get the full 1000 Watts.

If it reads 4 ohms connect it to a 2CHANNEL AMP and BRIDGE IT (connect + of the sub to 1st channels positive of the amp then connect - of the sub to 2nd channels negative of the amp) . The power will be doubled when you bridge it on a 2 channel amp. NOW if it was a 2 ohm sub and you bridged it to the 2 channel amp it will fry the subs and ruin the amp. 2 CHANNELS CANT TAKE A 2OHM LOAD BRIDGED OK.

Apr 08, 2010 | MTX (SLH-T7512X2-A) Car Speaker

1 Answer

I have 2 12'' subs 1300.watts and 2 1200watts amps both bridge to push 2400.00watts do not sound lond enoungh


impedance mismatch cud be the culprit. make sure ur speakers are the right ohms for ur amp. most amps are designed to operate on a 4 ohms speaker load on bridge mode. some amps are never designed for bridge mode. so if u bridge these amps u will get less output. u have to be very careful when u make the connections. plus when u bridge two amps for 4 ohms load, the total impedance becomes 8 ohms. make sure ur speakers are 8 ohms. few ohms can make big difference on power amps.

Apr 07, 2010 | Sony Xplod 1200W Class AB Bridgeable 2-Ch....

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Ive got a 5channel zeus z7oo & im hooking up


if i were you i would put the switch to 4ch and the run one sub from ch1-2 bridged and then ch3-4 bridged. I would have to bet this amp is stable only to 4 ohms bridged with so many channels

Mar 19, 2010 | Hifonics Zeus Z700 Car Audio Amplifier

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I have 4/3/2 ch. alpine f-240 amp- i want to hook up four 6x8 3-way and one 12''sub. the amp has bass EQ on ch. 3. how would i hook it up and get the most power. can i put the 4 6x8 bridged all together...


run two 6x8s on each of the front channels of the amp. then depending on the sub you can bridge it on the rear channels.only if its a single four ohm. if its a dual 2 ohm sub run each coil on each channel. 1 coil-1channel. the other coil-the other channel. amp should run fine may run a little hot since it will be doing all it can do at a safe ohm load. just make sure it is mounted in a well vented area. should be safe.

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1 Answer

Kicker 8 inch 4 ohm subwoofer 200 watts rms?


Max 200 W. You could bridge 2 channels of a 4 channel amp (or get a 2 ch amp and bridge it) and connect the sub. Bridging = connect + of sub to + of one channel, and connect - of sub to - of *other* channel. Check amp manual for instructions.

Don't get a mono - most are 300W or more - might burn the coil during loud passages.

Jun 22, 2009 | Car Audio & Video

1 Answer

Why connect a car amp in series and will this help me?


Not sure if it's what was meant by previous poster. But if you're just driving the two subs off the 4 ch, and no other speakers, your best bet is to run pairs of bridged channels, ie use the 4 ch as a more powerful 2 ch amp. Then independently run one sub on each of these paired channels.

If you bridge all 4 channels (not sure if this is an option on this amp), and then run your subs in series, you will likely lose out compared to the peak power you could be seeing with two independently paired channels.

Dec 01, 2008 | Car Audio & Video

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